74405506 has 32 divisors (see below), whose sum is σ = 133705728. Its totient is φ = 30362640.

The previous prime is 74405497. The next prime is 74405509. The reversal of 74405506 is 60550447.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74405509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99771 + ... + 100513.

It is an arithmetic number, because the mean of its divisors is an integer number (4178304).

Almost surely, 2^74405506 is an apocalyptic number.

74405506 is a deficient number, since it is larger than the sum of its proper divisors (59300222).

74405506 is a wasteful number, since it uses less digits than its factorization.

74405506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 74405506 is about 8625.8626235293. The cubic root of 74405506 is about 420.5991185124.

The spelling of 74405506 in words is "seventy-four million, four hundred five thousand, five hundred six".